Heterozygosity, gender, and the growth-defense trade-off in quaking aspen.
Identifieur interne : 001835 ( Main/Exploration ); précédent : 001834; suivant : 001836Heterozygosity, gender, and the growth-defense trade-off in quaking aspen.
Auteurs : Christopher T. Cole [États-Unis] ; Michael T. Stevens [États-Unis] ; Jon E. Anderson [États-Unis] ; Richard L. Lindroth [États-Unis]Source :
- Oecologia [ 1432-1939 ] ; 2016.
Descripteurs français
- KwdFr :
- MESH :
- génétique : Populus.
- Arbres, Environnement, Feuilles de plante, Hétérozygote.
English descriptors
- KwdEn :
- MESH :
- genetics : Populus.
- Environment, Heterozygote, Plant Leaves, Trees.
Abstract
Although plant growth is generally recognized to be influenced by allocation to defense, genetic background (e.g., inbreeding), and gender, rarely have those factors been addressed collectively. In quaking aspen (Populus tremuloides Michx.), phenolic glycosides (PGs) and condensed tannins (CTs) constitute up to 30 % of leaf dry weight. To quantify the allocation cost of this chemical defense, we measured growth, defense chemistry, and individual heterozygosity (H obs at 16 microsatellite loci) for male and female trees in both controlled and natural environments. The controlled environment consisted of 12 juvenile genets grown for 3 years in a common garden, with replication. The natural environment consisted of 51 mature genets in wild populations, from which we sampled multiple ramets (trees) per genet. Concentrations of PGs and CTs were negatively correlated. PGs were uncorrelated with growth, but CT production represented a major cost. Across the range of CT levels found in wild-grown trees, growth rates varied by 2.6-fold, such that a 10 % increase in CT concentration occurred with a 38.5 % decrease in growth. H obs had a marked effect on aspen growth: for wild trees, a 10 % increase in H obs corresponded to a 12.5 % increase in growth. In wild trees, this CT effect was significant only in females, in which reproduction seems to exacerbate the cost of defense, while the H obs effect was significant only in males. Despite the lower growth rate of low-H obs trees, their higher CT levels may improve survival, which could account for the deficit of heterozygotes repeatedly found in natural aspen populations.
DOI: 10.1007/s00442-016-3577-6
PubMed: 26886130
Affiliations:
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Anderson</name><affiliation wicri:level="1"><nlm:affiliation>Division of Science and Mathematics, University of Minnesota, Morris, 600 E. 4th St., Morris, MN, 56267, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Division of Science and Mathematics, University of Minnesota, Morris, 600 E. 4th St., Morris, MN, 56267</wicri:regionArea><wicri:noRegion>56267</wicri:noRegion></affiliation></author><author><name sortKey="Lindroth, Richard L" sort="Lindroth, Richard L" uniqKey="Lindroth R" first="Richard L" last="Lindroth">Richard L. Lindroth</name><affiliation wicri:level="1"><nlm:affiliation>Department of Entomology, University of Wisconsin-Madison, Madison, WI, 53706, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Entomology, University of Wisconsin-Madison, Madison, WI, 53706</wicri:regionArea><wicri:noRegion>53706</wicri:noRegion></affiliation></author></analytic><series><title level="j">Oecologia</title><idno type="eISSN">1432-1939</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Environment (MeSH)</term><term>Heterozygote (MeSH)</term><term>Plant Leaves (MeSH)</term><term>Populus (genetics)</term><term>Trees (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Arbres (MeSH)</term><term>Environnement (MeSH)</term><term>Feuilles de plante (MeSH)</term><term>Hétérozygote (MeSH)</term><term>Populus (génétique)</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Populus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Environment</term><term>Heterozygote</term><term>Plant Leaves</term><term>Trees</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Arbres</term><term>Environnement</term><term>Feuilles de plante</term><term>Hétérozygote</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Although plant growth is generally recognized to be influenced by allocation to defense, genetic background (e.g., inbreeding), and gender, rarely have those factors been addressed collectively. In quaking aspen (Populus tremuloides Michx.), phenolic glycosides (PGs) and condensed tannins (CTs) constitute up to 30 % of leaf dry weight. To quantify the allocation cost of this chemical defense, we measured growth, defense chemistry, and individual heterozygosity (H obs at 16 microsatellite loci) for male and female trees in both controlled and natural environments. The controlled environment consisted of 12 juvenile genets grown for 3 years in a common garden, with replication. The natural environment consisted of 51 mature genets in wild populations, from which we sampled multiple ramets (trees) per genet. Concentrations of PGs and CTs were negatively correlated. PGs were uncorrelated with growth, but CT production represented a major cost. Across the range of CT levels found in wild-grown trees, growth rates varied by 2.6-fold, such that a 10 % increase in CT concentration occurred with a 38.5 % decrease in growth. H obs had a marked effect on aspen growth: for wild trees, a 10 % increase in H obs corresponded to a 12.5 % increase in growth. In wild trees, this CT effect was significant only in females, in which reproduction seems to exacerbate the cost of defense, while the H obs effect was significant only in males. Despite the lower growth rate of low-H obs trees, their higher CT levels may improve survival, which could account for the deficit of heterozygotes repeatedly found in natural aspen populations.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">26886130</PMID><DateCompleted><Year>2017</Year><Month>05</Month><Day>12</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1432-1939</ISSN><JournalIssue CitedMedium="Internet"><Volume>181</Volume><Issue>2</Issue><PubDate><Year>2016</Year><Month>06</Month></PubDate></JournalIssue><Title>Oecologia</Title><ISOAbbreviation>Oecologia</ISOAbbreviation></Journal><ArticleTitle>Heterozygosity, gender, and the growth-defense trade-off in quaking aspen.</ArticleTitle><Pagination><MedlinePgn>381-90</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/s00442-016-3577-6</ELocationID><Abstract><AbstractText>Although plant growth is generally recognized to be influenced by allocation to defense, genetic background (e.g., inbreeding), and gender, rarely have those factors been addressed collectively. In quaking aspen (Populus tremuloides Michx.), phenolic glycosides (PGs) and condensed tannins (CTs) constitute up to 30 % of leaf dry weight. To quantify the allocation cost of this chemical defense, we measured growth, defense chemistry, and individual heterozygosity (H obs at 16 microsatellite loci) for male and female trees in both controlled and natural environments. The controlled environment consisted of 12 juvenile genets grown for 3 years in a common garden, with replication. The natural environment consisted of 51 mature genets in wild populations, from which we sampled multiple ramets (trees) per genet. Concentrations of PGs and CTs were negatively correlated. PGs were uncorrelated with growth, but CT production represented a major cost. Across the range of CT levels found in wild-grown trees, growth rates varied by 2.6-fold, such that a 10 % increase in CT concentration occurred with a 38.5 % decrease in growth. H obs had a marked effect on aspen growth: for wild trees, a 10 % increase in H obs corresponded to a 12.5 % increase in growth. In wild trees, this CT effect was significant only in females, in which reproduction seems to exacerbate the cost of defense, while the H obs effect was significant only in males. Despite the lower growth rate of low-H obs trees, their higher CT levels may improve survival, which could account for the deficit of heterozygotes repeatedly found in natural aspen populations.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Cole</LastName><ForeName>Christopher T</ForeName><Initials>CT</Initials><Identifier Source="ORCID">0000-0003-1192-6960</Identifier><AffiliationInfo><Affiliation>Division of Science and Mathematics, University of Minnesota, Morris, 600 E. 4th St., Morris, MN, 56267, USA. colect@morris.umn.edu.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Stevens</LastName><ForeName>Michael T</ForeName><Initials>MT</Initials><AffiliationInfo><Affiliation>Department of Biology, Utah Valley University, Orem, UT, 84058, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Anderson</LastName><ForeName>Jon E</ForeName><Initials>JE</Initials><AffiliationInfo><Affiliation>Division of Science and Mathematics, University of Minnesota, Morris, 600 E. 4th St., Morris, MN, 56267, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lindroth</LastName><ForeName>Richard L</ForeName><Initials>RL</Initials><AffiliationInfo><Affiliation>Department of Entomology, University of Wisconsin-Madison, Madison, WI, 53706, USA.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2016</Year><Month>02</Month><Day>17</Day></ArticleDate></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>Oecologia</MedlineTA><NlmUniqueID>0150372</NlmUniqueID><ISSNLinking>0029-8549</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D004777" MajorTopicYN="N">Environment</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006579" MajorTopicYN="N">Heterozygote</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018515" MajorTopicYN="Y">Plant Leaves</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">Allocation cost</Keyword><Keyword MajorTopicYN="Y">Condensed tannin</Keyword><Keyword MajorTopicYN="Y">Heterozygote advantage</Keyword><Keyword MajorTopicYN="Y">Phenolic glycoside</Keyword><Keyword MajorTopicYN="Y">Phenylpropanoid pathway</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2015</Year><Month>08</Month><Day>18</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2016</Year><Month>01</Month><Day>25</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2016</Year><Month>2</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2016</Year><Month>2</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>5</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">26886130</ArticleId><ArticleId 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Cole</name></noRegion><name sortKey="Anderson, Jon E" sort="Anderson, Jon E" uniqKey="Anderson J" first="Jon E" last="Anderson">Jon E. Anderson</name><name sortKey="Lindroth, Richard L" sort="Lindroth, Richard L" uniqKey="Lindroth R" first="Richard L" last="Lindroth">Richard L. Lindroth</name><name sortKey="Stevens, Michael T" sort="Stevens, Michael T" uniqKey="Stevens M" first="Michael T" last="Stevens">Michael T. Stevens</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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